JP2008207206A - Apparatus for lubricating die for forging press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a lubricant to be uniformly and efficiently applied on a forging surface of respective upper and lower dies even in the case that a nozzle tube is inserted from the front surface side or the back surface side of a forging press, at the upper part of a beam of a transfer device. <P>SOLUTION: The sets of respective nozzle tube 3 for spraying the lubricant onto the forging surfaces of the respective upper and lower dies 55a, 55b, are inserted into the forging press 51, at the upper part of the beam 56b of the transfer device 56, and are turned downward when the nozzle tube is passed through the position of the beam 56b, so that the upper and lower position of the nozzle 3a is approached to the intermediate position between respective pairs of upper and lower dies 55a, 55b, thereby, even in the case that the nozzle tube 3 is inserted from the back surface of the forging press 51, at the upper part of the beam 56b of the transfer device 56, the lubricant which is sprayed from the nozzle 3a of each nozzle tube 3, is uniformly and efficiently applied on the forging surface of the upper and lower dies 55a, 55b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a die lubrication device for a forging press that injects a lubricant onto a forging surface of each die during a forging operation of the forging press.

  In a forging press in which multiple sets of upper and lower opposing dies are arranged in the left-right direction, lubricant is sprayed onto the forging surface of each die during the forging operation, and the forging surface of each die is used for cooling and cleaning. Lubricate. In this way, in the die lubrication device that lubricates the forging surface of the die of the forging press, the lubricant injection mechanism having a plurality of sets of nozzle tubes is advanced and retracted from the front and rear direction of the forging press, and the upper die is raised. In accordance with the timing when a space is opened between the upper and lower molds, each group of nozzle tubes is inserted into a forging press in which a plurality of molds are arranged, and the nozzle tubes of each group are arranged in the left-right direction. In addition, there is a type that injects a lubricant onto a forging surface of each predetermined mold (see, for example, Patent Document 1). Usually, the lubricant injection mechanism is often advanced and retracted from the rear surface side of the forging press.

JP 2006-61955 A

  Many forging presses in which a plurality of sets of upper and lower dies are arranged in the left-right direction are provided with a transfer device that grips and conveys a workpiece with fingers provided on a pair of front and rear beams that open, close, advance, and retract. In a forging press equipped with such a transfer device, the die lubrication device as described in Patent Document 1 has a plurality of sets of nozzle tubes so as not to collide with the beam of the transfer device extending in the left-right direction of the forging press. It is necessary to penetrate into the forging press. At that time, since the beam of the transfer device is often raised to near the middle height position between the upper and lower molds, when each set of nozzle tubes is inserted into the forging press above the beam, the nozzle The upper and lower positions of the tube nozzles deviate from the intermediate position between the upper and lower molds of each set. For this reason, the lower mold is far away from the nozzle, so the lubricant is not sufficiently applied to the forged surface, and the upper mold is too close to the nozzle to apply a uniform lubricant to the forged surface. There is a problem that becomes difficult.

  Therefore, the problem of the present invention is that even if the nozzle tube is inserted from the front side or the rear side of the forging press above the beam of the transfer device, the lubricant can be evenly applied to the forging surfaces of the upper and lower molds without waste. Is to do so.

  In order to solve the above problems, the present invention advances and retracts a lubricant injection mechanism including a plurality of sets of nozzle tubes from the front-rear direction of a forging press including a transfer device that transports a workpiece by a pair of front and rear beams. The plurality of sets of nozzle tubes are arranged in the left-right direction from the nozzles of these sets of nozzle tubes by allowing a plurality of sets of upper and lower molds facing vertically to enter a forging press arranged in the left-right direction. In a die lubrication device of a forging press that injects a lubricant onto a forging surface of each predetermined die, the plurality of sets of nozzle tubes are allowed to enter the forging press above the beam of the transfer device, and the tip thereof is A configuration is adopted in which the position of the nozzle is moved downward after passing through the beam so that the vertical position of the nozzle approaches the intermediate position between the upper and lower molds of each set.

  That is, a plurality of sets of nozzle tubes are inserted into the forging press above the beam of the transfer device, and the tip of the nozzle tube is moved downward after passing through the position of the beam. By approaching the middle position between the dies, the lubricant can be evenly applied to the forged surfaces of the upper and lower dies without waste.

  By supporting the base end side of each set of nozzle tubes with a horizontal rotation shaft directed in the left-right direction of the forging press, and moving each set of nozzle tubes downward by rotating in the vertical direction Each set of nozzle tubes can be quickly moved downward by a simple support mechanism.

  The die lubrication device of the forging press according to the present invention allows a plurality of sets of nozzle tubes to enter the forging press above the beam of the transfer device and move the tip downward after passing through the position of the beam. Since the upper and lower positions of the nozzles are brought closer to the intermediate position between the upper and lower molds of each set, the lubricant can be evenly applied to the forged surfaces of the upper and lower molds without waste.

  By pivotally supporting the base end side of each set of nozzle tubes with a horizontal rotation shaft directed in the left-right direction of the forging press, and moving each set of nozzle tubes downward by rotating in the vertical direction, Each set of nozzle tubes can be quickly moved downward by a simple support mechanism.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the die lubrication device of this forging press has three nozzle tubes 3, one for each group, in a carriage 20 that can move to the rear side of the forging press 51. The provided lubricant injection mechanism 1 and an advance / retreat mechanism 21 for moving the lubricant injection mechanism 1 back and forth from the rear surface side of the forging press 51 are mounted. The forging press 51 includes an upper die holder 52 that moves up and down and a lower die holder 54 that is fixed to the bolster plate 53, and three sets of upper and lower molds 55a and 55b that are vertically opposed to each other. On the rear surface side, a beam 56b extending in the left-right direction provided with a workpiece conveying finger 56a of the transfer device 56 is raised as shown by a one-dot chain line in FIG.

  The advancing / retracting mechanism 21 is a motor 22 attached to the rear side of the carriage 20 and rotationally drives a ball screw 23 directed in the front-rear direction, and a base 24 attached to the nut 23a is moved by left and right guide rails 25. The support base 2 of the lubricant injection mechanism 1 is attached to the tip ends of two shaft members 26 that extend forward from the base 24 while being guided. The two shaft members 26 that advance and retreat together with the base 24 are guided by a guide cylinder 27 provided on the front side of the carriage 20.

  As shown in FIGS. 3 and 4, a pair of arm members 4 projecting in an L shape above the beam 56 b on the rear surface side are attached to the front end side of the support base 2 of the lubricant injection mechanism 1. The proximal end sides of the three nozzle tubes 3 are fixed to a rotating shaft 5 that is horizontally passed in the left and right directions at the distal ends of the pair of arm members 4, and a lubricant is attached to the distal ends of these nozzle tubes 3. Is provided in the nozzle 3a. The rotation shaft 5 is connected to a forward rod 8a of a cylinder 8 attached to the support 2 via a connecting rod 6 fixed to the rotation shaft 5 and a link 7 whose connection points at both ends are rotatable. The cylinder 8 is rotated by the reciprocating motion of the cylinder 8.

  As indicated by a two-dot chain line in FIG. 3, before each nozzle tube 3 enters the forging press 51, the rod 8a of the cylinder 8 is shrunk so that each nozzle tube 3 is lifted by a beam 56b on the rear surface side. It is turned upward so as not to collide. In a state where each nozzle tube 3 is rotated upward, the nozzle 3a at the tip thereof is directed in an oblique vertical direction.

  As shown by the solid line in FIG. 3, when each nozzle tube 3 passes through the position of the beam 56b, the rod 8a of the cylinder 8 is extended, and each nozzle tube 3 is rotated downward, so that the nozzles at the tip portions thereof. 3a is brought close to an intermediate position between the upper and lower molds 55a and 55b and directed in the vertical direction. Therefore, the lubricant sprayed from the nozzle 3a of each nozzle tube 3 can be evenly applied to the forged surfaces of the upper and lower molds 55a and 55b without waste. Each nozzle tube 3 that has finished spraying the lubricant is rotated upward in the direction opposite to that of the forward movement, and moves backward so as to avoid the raised rear-side beam 56b.

  In the above-described embodiment, the number of nozzle tubes in each group is one, and the number of nozzles in each nozzle tube is also one. However, the number of nozzle tubes in each group and the number of nozzles in each nozzle tube are Depending on the size of the forged surface of the mold, a plurality may be provided. The number of sets of nozzle tubes is not limited to the three sets of the embodiment, and can be set to any number according to the number of sets of molds.

  In the above-described embodiment, the rotation axis of the nozzle tube is rotated using the cylinder and the link. However, the rotation of the servo motor is transmitted to the rotation axis via a gear or a timing belt. It is also possible to employ known rotating means.

Notched front view showing an embodiment of a die lubrication device of a forging press Notched plan view of FIG. The front view which expands and shows the lubricant injection mechanism of FIG. Plan view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lubricant injection mechanism 2 Support stand 3 Nozzle pipe | tube 3a Nozzle 4 Arm member 5 Rotating shaft 6 Connecting rod 7 Link 8 Cylinder 8a Rod 20 Carriage 21 Advance / Retreat mechanism 22 Motor 23 Ball screw 23a Nut 24 Base 25 Guide rail 26 Shaft member 27 Guide cylinder 51 Forging press 52 Upper die holder 53 Bolster plate 54 Lower die holders 55a, 55b Mold 56 Transfer device 56a Finger 56b Beam

Claims (2)

  A lubricant injection mechanism having a plurality of sets of nozzle tubes is advanced and retracted from the front-rear direction of a forging press provided with a transfer device that conveys a workpiece by a pair of front and rear beams, and the plurality of sets of nozzle tubes are vertically opposed to each other. The upper and lower molds of the set are allowed to enter the forging press arranged in the left-right direction, and the lubricant is sprayed from the nozzles of the nozzle tubes of each set to the forging surfaces of the predetermined molds arranged in the left-right direction. In the die lubrication device of the forging press, the plurality of sets of nozzle tubes are inserted into the forging press above the beam of the transfer device, and the tip thereof is moved downward after passing the position of the beam. A die lubrication device for a forging press, characterized in that the vertical position of the nozzle is brought close to an intermediate position between the upper and lower molds of each set.   The base end side of each group of nozzle tubes is pivotally supported by a horizontal rotation shaft directed in the left-right direction of the forging press, and each group of nozzle tubes is moved downward by rotating in the vertical direction. The die lubrication device for a forging press according to claim 1.

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